The reduction reaction between magnesium oxide (MgO) and carbon (C) produces magnesium (Mg) and carbon dioxide (CO₂).

Word Equation:

Magnesium oxide + Carbon → Magnesium + Carbon dioxide

Symbol Equation:

2MgO + C → 2Mg + CO₂

Explanation:

* Reduction: This reaction is a reduction reaction because the magnesium in magnesium oxide is reduced from an oxidation state of +2 to 0 in elemental magnesium.

* Carbon as a reducing agent: Carbon acts as a reducing agent, meaning it donates electrons to the magnesium oxide.

* Oxidation of Carbon: Carbon is oxidized from an oxidation state of 0 to +4 in carbon dioxide.

Important Note: This reaction requires high temperatures to proceed.